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Number of 6X6 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order
0

%I #3 Sep 29 2013 06:47:03

%S 924,1976588468,90462380211862,322942973130396495,

%T 245200063296427870294,65350451915118676316696,

%U 8161432175844147542615052,573385480689864447112662651,25636132281885860529849116700

%N Number of 6X6 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order

%C Row 6 of A229774

%e Some solutions for n=1

%e ..0..0..0..0..0..0....1..1..1..1..1..1....1..0..0..0..0..0....1..0..0..0..0..0

%e ..1..0..0..0..0..0....1..1..1..1..1..1....1..0..0..0..0..0....1..0..0..0..0..0

%e ..1..1..1..0..0..0....1..1..1..1..1..1....1..0..0..0..0..0....1..0..0..0..0..0

%e ..1..1..1..1..1..0....1..1..1..1..1..1....1..1..1..0..0..0....1..0..0..0..0..0

%e ..1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..1..0....1..1..0..0..0..0

%e ..1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..1..0....1..1..1..0..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 29 2013